/**
 * 
 */
package com.jquery.ui.core.base;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.DynamicAttributes;
import javax.servlet.jsp.tagext.TagSupport;

import com.jquery.ui.core.bean.UIBean;
import com.jquery.ui.core.exception.JqueryUIRuntime;
import com.jquery.ui.core.freemarker.FreemarkerFactory;

/**
 * @author linyajun
 * 
 * @date	2013-9-18
 * @description   
 */
public abstract class BaseTag extends TagSupport implements
DynamicAttributes {

	/**
	 * 
	 */
	private static final long serialVersionUID = -5609879272471672511L;
	
	private String id;
	private String renderTo;
	private JspWriter out;
	protected UIBean ui;
	private Map<String,Object> dynamicAttribute=new HashMap<String, Object>();
	private void init(){
		
		if (!isValid()) {
			throw new JqueryUIRuntime("The relationship between father and son error! please check!");
		}
		
		
		if (ui==null) {
			ui = getUiBean();
			ui.putAttriValue("id", id);
			ui.putAttriValue("renderTo", renderTo);
			ui.putAttriValue("dynamicAttribute", dynamicAttribute);
		}
		out=pageContext.getOut();
		
	}
	

	@Override
	public int doStartTag() throws JspException {
		init();
		if (getStartTemplate()!=null) {
			FreemarkerFactory.getInstance().renderTemplate(getStartTemplate(), ui.getAttribute(), out);
		}
		
		return EVAL_PAGE;
	}
	

	@Override
	public int doEndTag() throws JspException {
		if (getEndTemplate()!=null) {
			endInvoke(ui.getAttribute());
			FreemarkerFactory.getInstance().renderTemplate(getEndTemplate(),ui.getAttribute(), out);
		}
		endInvoke();
		ui=null;
		return EVAL_PAGE;
	}
	/**
	 * @param attribute
	 * @description   额外的处理方法
	 */
	public  void endInvoke(Map<String, Object> attribute){};
	/**
	 * @param attribute
	 * @description   额外的处理方法
	 */
	public  void endInvoke(){};
	
	public void setDynamicAttribute(String url, String attribute, Object value)
			throws JspException {
		
		dynamicAttribute.put(attribute, value);
	}
	
	public abstract UIBean getUiBean();
	
	
	public abstract String getStartTemplate();
	public abstract String getEndTemplate();
	
	/**
	 * @return
	 * @description   验证父子关系的tag
	 */
	protected boolean isValid(){
		
		return true;
	}

	/**
	 * @return the id
	 */
	public String getId() {
		return id;
	}

	/**
	 * @param id the id to set
	 */
	public void setId(String id) {
		this.id = id;
	}

	/**
	 * @return the renderTo
	 */
	public String getRenderTo() {
		return renderTo;
	}

	/**
	 * @param renderTo the renderTo to set
	 */
	public void setRenderTo(String renderTo) {
		this.renderTo = renderTo;
	}
	
	
	

}
